Author: chandler yergin
Date: 08:09:11 01/30/06
Go up one level in this thread
On January 29, 2006 at 19:06:13, stuart taylor wrote:
>On January 29, 2006 at 16:33:51, Terry McCracken wrote:
>
>>On January 29, 2006 at 15:45:52, George Tsavdaris wrote:
>>
>>>
>>> In the following position you must avoid 13...dxc4?? that loses by a rather
>>>deep combination.
>>> The reason i post this is because i don't see often Rybka fail to see something
>>>and that makes me feel good and superior to it, since i played as white this
>>>game and won....:-) Now back to reality: Rybka beta 13b considers 13...dxc4 as a
>>>good move for black and gives -0.95 after 13 plies. It also can't find my
>>>excellent move 14.d5!! in a reasonable time (actually because i'm too lazy i
>>>waited only 2:30 minutes on AMD3500+).
>>>
>>> White (I) has set up a good trap in this position to black. Rybka can't see
>>>this.... Any estimation from its author of when it will be able to avoid
>>>13...dxc4 and see 14.d5!!.....?
>>>
>>>[D]rn1qk2r/pp3ppp/4b3/3p4/2PP1p2/B4N2/P3Q1PP/R4RK1 b kq - 0 13
>>>
>>>[Event "?????"]
>>>[Site "????????"]
>>>[Date "????.??.??"]
>>>[Round "?"]
>>>[White "????"]
>>>[Black "????"]
>>>[Result "*"]
>>>[SetUp "1"]
>>>[FEN "rn1qk2r/pp3ppp/4b3/3p4/2PP1p2/B4N2/P3Q1PP/R4RK1 b kq - 0 13"]
>>>[PlyCount "34"]
>>>[EventDate "????.??.??"]
>>>
>>>13... dxc4 $2 (13... Nc6) 14. d5 $3 Qxd5 15. Rad1 Qa5 (15... Qb5 16. Nd4 Qb6
>>>17. Kh1 Nd7 18. Rxf4 O-O-O 19. Nxe6 Qxe6 20. Rxc4+ Kb8 21. Qxe6 fxe6 22. Rcd4
>>>b5 23. Rxd7 Kc8 $18 {And now white is clearly winning.... There are 2 roads:
>>>24.Rxd8 Kxd8 25.Rxd8 Kxd8 with a Bishop against 2 Pawns at the endgame where
>>>white should be able to convert it to a win or 24.Rd2 for example with a
>>>Bishop more for 2 Pawns....}) 16. Nd4 Qxa3 (16... Qb6 17. Kh1 Nd7 18. Rxf4
>>>O-O-O 19. Nxe6 Qxe6 20. Rxc4+ Kb8 21. Qxe6 fxe6 22. Rcd4 b5 23. Rxd7 Kc8 $18 {
>>>And now white is clearly winning.... There are 2 roads: 24.Rxd8 Kxd8 25.Rxd8
>>>Kxd8 with a Bishop against 2 Pawns at the endgame where white should be able
>>>to convert it to a win or 24.Rd2 for example with a Bishop more for 2 Pawns....
>>>}) 17. Nxe6 Qe3+ 18. Qxe3 fxe3 19. Nc7+ Ke7 20. Rfe1 Rc8 21. Rxe3+ Kf8 22. Nxa8
>>>Nc6 23. Rd7 Rxa8 24. Rxb7 f6 (24... Rc8 25. Re4 Rd8 26. Rc7 Nd4 27. Ree7 Ne6
>>>28. Rxf7+ Kg8 29. Rfd7 Rxd7 30. Rxd7 $18) 25. Rc7 Ne5 26. Rg3 g6 27. Rxh7 Kg8
>>>28. Rc7 a5 29. Rh3 Rd8 30. Rhh7 $18 *
>>
>>Excellent Game! I doubt any program could see 13..dxc4 as an error, the win is
>>simply too far away!
>>
>>Congratulations!
>>
>>Terry
>
>If it can see a mate in 36, then can't we expect it to find a forced win in 17
>or so?
>S.Taylor
Mate in 36 is 72 Ply! How long does it take your Engine to search Depth
of 72 Ply?
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